4
Using Your Scanner
4-17
R4C449
Rev. C
A5 size
CHAP4.FM
12/2/99
Pass 3
R
Proof Sign-off:
tanto name
SEI Y.Takasaki M.Fujimori
leader name M.Fujimori
editor name
SEI M.Kauppi
If you have a character recognition problem with OCR scanning,
using 600 dpi may improve your OCR results. However, note that
scanning at higher resolution takes longer.
File Size
The
File Size
indicator only displays what the rough file size of
the scanned image will be. Changes you make in your settings or
the marquee size will be reflected here.
Threshold
Threshold
is used to control the lightness of the scanned image.
You can adjust the
Threshold
value using the
Threshold
list or by
using the slide bar.
Threshold list
The
Threshold
list provides the following four options which
are suitable for scanning these materials with increasing
levels of darkness:
❏
Newspaper
❏
Magazine
❏
Printout
❏
Book
Slide bar
The slide bar lets you adjust the lightness value seven steps
from lighter to darker. If you use the slide bar, “ User Defined”
will appear in the
Threshold
list. Your threshold settings will
remain in effect until you uncheck the “ Save Preview Image
and Settings” in the Configuration dialog box.
